Overheating problem and low coolant level in Peugeot Traveller Diesel 2019

Hi, I have a bit of experience with cars and had a similar problem with my 2017 Peugeot Expert Diesel. At my garage they found that the wiring harness to the sensor was faulty and corroded, which is why my car was also overheating and the coolant level was low. It cost me 155 euros to have this repaired. But to be able to help you more precisely, I could use more details about your vehicle. What engine characteristics does it have? Have you noticed if the symptom occurs after driving long distances, during short trips or in certain driving conditions (like high speed or in the city)? The more details you can share, the better.

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Thanks for your reply and the helpful information! So it's the 2.0L BlueHDi 150 engine in my Peugeot. I've noticed the overheating mainly on long journeys, not necessarily in town. I recently had my annual inspection, everything was fine and my mileage is 84080 KM. Keep the wiring harness thing in mind, maybe it's the same with mine.

(Translated from German)

Hey, thanks for the additional info! Based on your information, the problem sounds very similar to my Peugeot Expert. Especially if the overheating mainly happens on long journeys, the faulty wiring harness to the sensor could be the culprit. Another indication could be that the temperature display in the cockpit sometimes rises spontaneously and then drops again. I would definitely have this checked at the workshop. Don't forget to mention the issue with the wiring harness, maybe the mechanics can then look in the right place. But don't stress too much - if it really is the wiring harness, it's not a super expensive repair! Good luck and keep us up to date. Safe drive!

(Translated from German)

Great, thanks for the tips! I've also noticed the spontaneous rise and fall in the temperature display. I'll make an appointment at the garage tomorrow and talk to them about the wiring harness. You've really helped me out! Hopefully it's nothing worse and I'll get away with a similar bill to yours. I'll report back here when I know more. Until then, have a good trip too!

(Translated from German)